公务员考试中常用特殊小数(共2页).doc

精选优质文档-倾情为你奉上资料分析中常用的数学常数 “多位特殊小数”及其对应分数33.3%=0.333 66.7%=0.66725.0%=0.250 = 75.0%=0.750 =16.7%=0.167 83.3%=0.83314.3%=0.143 28.6%=0.28642.9%=0.429 57.5%=0.57571.4%=0.714 85.7%=0.85712.5%=0.125 = 37.5%=0.375 =62.5%=0.625 = 87.5%=0.875 =11.1%=0.111 22.2%=0.22244.4%=0.444 55.6%=0.55677.8%=0.778 88.9%=0.8899.1%=0.091 8.3%=0.083 7.7%=0.077 7.1%=0.0716.7%=0.067 6.25%=0.0625=特殊分数的记忆方式=0.4285=0.8571,=0.2857,=0.7142, =0.1428,=0.5714=0. ，；=0. ，无限不循环小数1.4141.414×1.4142 ；1.7321.732×1.73232.2362.236×2.2365 ；2.4492.449×2.44962.6462.646×2.6467 ；2.8282.828×2.82883.1623.162×3.162101130的平方数112=121 122=144 132=169 142=196 152=225162=256 172=289 182=324 192=361 202=400212=441 222=484 232=529 242=576 252=625262=676 272=729 282=784 292=841 302=900专心-专注-专业